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对盲信号分离的基本理论问题进行了探讨,给出了从混叠信号中分离出源信号的充要条件,并回答了源信号能提取的数量问题.同时,还给出了基于该理论的盲分离算法,该方法适应于病态混叠情形下的提取.且就几种不同的情况进行了计算机仿真.仿真结果表明了所提理论的正确性及相应算法的有效性.
The basic theory of blind signal separation is discussed, and the necessary and sufficient conditions for separating the source signal from the aliased signal are given, and the problem of the quantity of the source signal can be answered.At the same time, Blind separation algorithm, which adapts to the condition extraction in the condition of morbid aliasing, and carries on the computer simulation in several different situations.The simulation results show the correctness of the proposed theory and the effectiveness of the corresponding algorithm.